The JMP Oil Temperature gauge and Koso Voltmeter; these might seem unnecessary at the outset. But, once you have them, you can’t do without them. Or at least that’s what we are told. These are ownership enhancing add-ons for the Royal Enfield Interceptor 650 sold and marketed by NGage Powerparts. Why ownership enhancing? Simply because these take some of the uncertainty out of living with your motorcycle. And, of course, add a dose of coolness.